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                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                    ---------


                                  SCHEDULE 13G



   INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13D-1(b),
       (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13D-2(b)



                              Aether Systems, Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)


                     Common Stock, par value $.01 per share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    00808v105
--------------------------------------------------------------------------------
                                 (CUSIP Number)


                                December 31, 2000
--------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
[ ] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[X] Rule 13d-1(d)


        *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.


        The information required in the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 the Securities Exchange
Act of 1934 or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).



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CUSIP No. 00808v105                        13G                            Page 2 of 7 Pages
----------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------
    1.  Names of Reporting Persons.

        I.R.S. Identification No. of Above Persons (Entities Only).

        NexGen Technologies, L.L.C.              17-9802074

----------------------------------------------------------------------------------------------
    2.  Check the Appropriate Box if a Member of a Group*

                                                           (a)  [ ]

                                                           (b)  [X]
----------------------------------------------------------------------------------------------
    3.  SEC Use Only

----------------------------------------------------------------------------------------------
    4.  Citizenship or Place of Organization...Maryland
----------------------------------------------------------------------------------------------
   Number of     5.  Sole Voting Power...3,419,910
    Shares
                ------------------------------------------------------------------------------
 Beneficially    6.  Shared Voting Power...9,750,596
   Owned by
                ------------------------------------------------------------------------------
     Each        7.  Sole Dispositive Power...3,419,910
  Reporting
                ------------------------------------------------------------------------------
 Person With     8.  Shared Dispositive Power...0
----------------------------------------------------------------------------------------------
    9.  Aggregate Amount Beneficially Owned by Each Reporting Person...13,170,506
----------------------------------------------------------------------------------------------
   10.  Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*          [ ]
----------------------------------------------------------------------------------------------
   11.  Percent of Class Represented by Amount in Row (9)   32.6%
----------------------------------------------------------------------------------------------
   12.  Type of Reporting Person*  PN
----------------------------------------------------------------------------------------------



                     * SEE INSTRUCTIONS BEFORE FILLING OUT!

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CUSIP No. 00808v105                        13G                            Page 3 of 7 Pages
----------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------
    1.  Names of Reporting Persons.

        I.R.S. Identification No. of Above Persons (Entities Only).

        David S. Oros              219-66-7562
----------------------------------------------------------------------------------------------
    2.  Check the Appropriate Box if a Member of a Group*

                                                           (a)  [ ]

                                                           (b)  [X]
----------------------------------------------------------------------------------------------
    3.  SEC Use Only

----------------------------------------------------------------------------------------------
    4.  Citizenship or Place of Organization...United States
----------------------------------------------------------------------------------------------
   Number of     5.  Sole Voting Power...4,352,410
    Shares
                ------------------------------------------------------------------------------
 Beneficially    6.  Shared Voting Power...9,750,596
   Owned by
                ------------------------------------------------------------------------------
     Each        7.  Sole Dispositive Power...4,352,410
  Reporting
                ------------------------------------------------------------------------------
  Person With    8.  Shared Dispositive Power...0
----------------------------------------------------------------------------------------------
    9.  Aggregate Amount Beneficially Owned by Each Reporting Person...14,103,006
----------------------------------------------------------------------------------------------
   10.  Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*          [ ]
----------------------------------------------------------------------------------------------
   11.  Percent of Class Represented by Amount in Row (9)   34.9%
----------------------------------------------------------------------------------------------
   12.  Type of Reporting Person*  IN
----------------------------------------------------------------------------------------------



                     * SEE INSTRUCTIONS BEFORE FILLING OUT!

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                                                               Page 4 of 7 Pages

ITEM 1(a).     Name of Issuer

               Aether Systems, Inc. (the "Issuer")

ITEM 1(b).     Address of Issuer's Principal Executive Offices

               The address of the Issuer's principal executive offices is 11460
               Cronridge Drive, Owings Mills, Maryland 21117.

ITEM 2(a).     Name of Person Filing

               This statement is filed on behalf of NexGen Technologies, L.L.C.
               and David S. Oros.

ITEM 2(b).     Address of Principal Business Office or, if None, Residence

               The principal place of business of NexGen Technologies, L.L.C.
               and David S. Oros is 11460 Cronridge Drive, Owings Mills,
               Maryland 21117.

ITEM 2(c).     Citizenship

               The citizenship or place of organization of each of the Reporting
               Persons is set forth on the cover page.

ITEM 2(d).     Title of Class of Securities

               The title of the securities is common stock, par value $.01 per
               share (the "Common Stock").

ITEM 2(e).     CUSIP Number

               The CUSIP number of the Common Stock is set forth on the cover
               page.

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULE 13D-1(b), OR 13D-2(b) OR
       (c), CHECK WHETHER THE PERSON FILING IS A:

        (a)    [ ] Broker or dealer registered under Section 15 of the Exchange
                   Act.

        (b)    [ ] Bank as defined in Section 3(a)(6) of the Exchange Act.

        (c)    [ ] Insurance company as defined in Section 3(a)(19) of the
                   Exchange Act.

        (d)    [ ] Investment company registered under Section 8 of the
                   Investment Company Act.

        (e)    [ ] An investment adviser in accordance with Rule
                   13d-1(b)(1)(ii)(E);

        (f)    [ ] An employee benefit plan or endowment fund in accordance with
                   Rule 13d-1(b)(1)(ii)(F);

        (g)    [ ] A parent holding company or control person in accordance with
                   Rule 13d-1(b)(1)(ii)(G);

        (h)    [ ] A savings associations as defined in Section 3(b) of the
                   Federal Deposit Insurance Act;

        (i)    [ ] A church plan that is excluded from the definition of an
                   investment company under Section 3(c)(14) of the Investment
                   Company Act;

        (j)    [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).


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                                                               Page 5 of 7 Pages

ITEM 4. OWNERSHIP.

        (a)    Amount beneficially owned:

               NexGen Technologies, L.L.C.                13,170,506

               David S. Oros                              14,103,006

        (b)    Percent of class:

               NexGen Technologies, L.L.C.                     32.6%

               David S. Oros                                   34.9%

        (c)    Number of shares as to which the person has:

               (i)    Sole power to vote or to direct the vote

                             NexGen Technologies, L.L.C. owns 3,419,910 shares
                             of Common Stock. David S. Oros through his ability
                             to control NexGen may direct the vote of 3,419,910
                             shares of Common Stock. In addition, Mr. Oros owns
                             warrants to purchase 932,500 shares of Common
                             Stock.

               (ii)   Shared power to vote or to direct the vote

                             As a result of a voting agreement with Telcom-ATI
                             Investors, L.L.C., 3Com Corporation and Reuters
                             MarketClip Holdings Sarl, NexGen Technologies,
                             L.L.C. has the shared power to vote 9,750,596
                             shares of Common Stock. David S. Oros,
                             individually and through his ability to control
                             NexGen and NexGen's rights under the voting
                             agreement, has the shared power to vote or to
                             direct the vote of 9,750,596 shares of Common
                             Stock.

               (iii)  Sole power to dispose or to direct the disposition of

                             NexGen Technologies, L.L.C. has the sole power to
                             dispose or to direct the disposition of 3,419,910
                             shares of Common Stock. David S. Oros has the sole
                             power to dispose or direct the disposition of
                             4,352,410 shares of Common Stock.

               (iv)   Shared power to dispose or to direct the disposition of

                             NexGen Technologies, L.L.C.          0

                             David S. Oros                        0

ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

Not Applicable

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

Not Applicable

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
       SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL
       PERSON

Not Applicable

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

Not Applicable

ITEM 9. NOTICE OF DISSOLUTION OF GROUP

   6

Not Applicable

ITEM 10. CERTIFICATION

Not Applicable


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                                                               Page 7 of 7 Pages

                                    SIGNATURE

        After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.


Dated:  February 13, 2001



                                                   NEXGEN TECHNOLOGIES, L.L.C.


                                                   /s/   DAVID S. OROS
                                                      --------------------------
                                                   Name: David S. Oros

                                                   Title: Secretary





                                                   /s/  DAVID S. OROS
                                                      --------------------------
                                                   David S. Oros